. Author manuscript; available in PMC: 2013 Nov 1.

Published in final edited form as: Reprod Fertil Dev. 2013 Aug;25(7):1051–1064. doi: 10.1071/RD12212

Table 4.

Correlation analysis for epididymal rat spermatozoa subjected to different osmotic conditions

	Intact plasma membrane (%)	MMP (%)		Intracellular ROS in viable spermatozoa
	Intact plasma membrane (%)	Total spermatozoa with high MMP	Viable spermatozoa with high MMP	Basal ROS	Stimulated ROS	Rate of ROS generation
Total motility (%)	0.847^**	0.886^**	0.882^**	−0.417^*	−0.049	0.091
Intact plasma membrane (%)		0.977^**	0.974^**	−0.537^*	−0.157	0.062
Total spermatozoa with high MMP (%)			0.990^**	−0.485^*	−0.115	0.099
Viable spermatozoa with high MMP (%)				−0.455^*	−0.074	0.124
Basal ROS/viable spermatozoa					0.425^*	0.207
Stimulated ROS/viable spermatozoa						0.940^**

Data show Spearman’s rho correlations, with the r-values indicating the strength and direction (+/−) of the correlation.

Correlation is significant at the 0.05 level (two-tailed);

^**

correlation is significant at the 0.005 level (two-tailed).

MMP, mitochondrial membrane potential; ROS, reactive oxygen species